Conduit for high-tension electric currents.



A. W ARREN. OONDUIT FOR HIGH TENSION ELEOTRIG GURRENTS. APPLICATIONIILED APR. 19, 1905.

1,044,108. I Patented Nov. 12,1912.

2 SHEETB8HEET l.

ATTORNEY W. A. WAR-REN- GONDUIT FOR HIGH TENSION ELECTRIC GURRENTS.

APPLICATION FILED APR.19, 1905.

1,044,108. I I Patented Nov. 12,1912.

2 SHEETS-SHEET 2.

W/T/VESSES. lNVE/VTOR I 195/43 71% W. W

X 44,4 1.. BY

ATTORNEY WILLIAM A. WARREN, F HURLEY, NEW YORK.

CONDUIT FOR. HIGH-TENSION ELECTRIC GURRENT5.

Specification of Letters Patent.

i W Application filed April 19, 1905. Serial No. 256,360.

To all whom 'it may concern: r

Be it known that I, WILLIAM APrpE'roN WARREN, a citizen of the UnitedStates, residing at'Hurley, Ulster county, New York State, have inventedcertain new and useful Improvements in Conduits for High- [TensionElectric Currents, of which thefolany suitable size for desired length.Each sect on may be formed nected together,

lowing is a description. a My invention relates to new and usefulimprovements in conduits for high tension electric currents, and myobject is to pro+ vide a conduit of relatively low' cost and of highinsulating properties.

To this end the invention consists n an inclosed tubular conduit, inwhich the conductors' are supported by means of suitable insulators, theconduit being filled with oil, whereby the insulation will be of verysuperior character. Preferably, provis on is made formaintaining theconductors under constantstress, in. order that they may not becomeslack, with the consequent danger of electric leakage or actual shortcircuiting.

In order that the invention may be betterunderstood, attention isdirected to' the accompanying drawings, in which- Figure 1 is anelevation partly lIl section of my improved conduit, showing two or t-hecouplings'by which the sections'are 0I 1' Fig. '2 an enlarged longtudinal' section, showing one of the supporting insulators, Fig. 3 afront elevation of thesame, Fig; 4 a longitudinal sectional view throughone of the couplings and Fig. 5' a front tion of one of the couplingsections looking into the same. corresponding parts are represented by.the same numerals of reference.

The conduit consists of tubular sections I 1, made preferably of wroughtiron, of the purpose, and of any of a single pipe or tube, or of anumber of pipes secured together by ,ordinary pipe couplings. Connectingthe sections together are couplings 2 made of two sections as shown,threaded upon the-ends of the conduit, and the'sections held together bybolt? 3. 'The threaded connections between the coupling "2 and theconduit sectionsf-arepreferably tapered, as shown, in order to form aliquid tight joint. Mounted within the sections 1 of the conduit areconductors 4, 4 (one or more) which are supported at suitable 'points.by insulators 5 elevation partly in sec -In all of the above views such'as petroleum or (Figs. 2 and 3 These insulators a. made of porcelain,glass, hard rubber, micanite,

or any suitable insulating material. Each insulator'is preferably formedwith a central passage 6, and with longitudinal circumferential passages7, 7 to permit circulatlon of oil through the conduit.

very high tension to creep along insulating Patented Nov. 12 1912.

Since "there IS a tendency with electric currents of with nipples8,'surrounding the conductors,

in order that the length of the surfaces between the conductors therebyreduce any tendency of leakage from this cause. The conductors '4.- ineach section are engaged with insulating blocks may be increased, to

9, made preferably of porcelain, and at their free ends'are insertedwithin threaded tapered bushings 10, the latterlbeing split as shown,and being engaged by nuts 11, by whichthe bushings will be clamped onthe ends of the firmly in positidn within the insulating blocks 9. Theconductors 4 also pass through the bushings in a curved direction, asshown, so that theend's of the opposing conductors are more widelyseparated, to permit the bushings to be conveniently secured in place.If, desired, each of the couplings may be provided with a suitablemanhole (not shown) by which the interior may be reached. The bushings'10, 10 are connected together as shown, by flexible cables 12. ,Inorder to maintain the conductors under constant stress so as toaccommodate expansion or contraction therein from any cause, I make useof heavy springs 13, engaging metal washers 14, exerting stress on theinsulating blocks 9. Preferably a ,soft packing washers l4. and theblocks 9, in order to secure uniform bearing between the two.

After the the entire inclosed space within the conduit surrounding theconductors 4 is filled with a suitable cheap oil of high dielectricstrength, rosin oil (see Fig. 1) which obviously is free to circulatethrough the conduit and which may be supplied.

thereto and maintained constantly therein in any suitable way. The useof oil in the conduit for high tension currents, as explained,enormously improves the insulating character of the latter,

parts have been all assembled,-

so that the diameter ofthe pipesections may bemomparatively conductorsso as to lock the same 15 is introduced between thesmall, wherebythe"cost of installation will be reduced to a minimum. I

Having now described my invention, what I claim as new therein anddesire to secure by Letters Patent is as follows:

1. In a conduit for "high tension electric currents, the combinationwith a pipe or tube, conductors therein, an insulating block secured tothe end of said conductors, and a spring for imposing stress on saidblock to maintain the conductors under tension, substantially as setforth.

currents, the combination with a pipe or tube,

'15 a series of conductors therein, an insulating block having outwardlycurved passages through which the ends of said conductors are. extended,and a spring for imposing stress on the insulating block, whereby theconductors will be maintained under tension,

substantially as set forth.

3. In a conduit for high tension electric currents, the combination witha pipe or tube, a series of conductors therein, an insulating block withwhich the endsof said conductors are engaged, a metallic washer, a softpacking between said washer and the insulating block, and a springengaging the washer, whereby the conductors will be maintained undertension, as and for the purposes set forth.

' 4. In a conduit for high tension electric currents, thecombination'with a supporting tube, a conductor therein, an insulatingblock secured to said conductor, and a spring posi tioned to imposestress on said block to maintain said conductor under tension,substantially as setforth. P

5. In a conduit for high tension electric 40 currents, .asupportingtube, conductors therein, and a spring interposed between said tubeandboth said conductors for-maintaining the conductors under tension, sub-'stantially as set forth. I

6. In a conduit for hightension electric 0 currents, a pair ofsupporting tubes, a coupling for connecting said tubes, a conductor I ineach of said tubes, springs for maintain- 1n sald conductors undertension wlthin said tubes, and a fie xible connection between theadjacent ends of said conductors, substantiallyv as set forth.

7. In a conduit for high tension electric currents, a pair of supportingtubes, a coupling for connecting said tubes, aconductor in each of saidtubes, an insulating plug se- 1 cured to the end of each of saidconductors, 2. In a conduit for high tension electric a spring bearingagainst said plug to maintain the conductor under tension, and aflexible connection between the adjacent ends of sa d conductors,substantially as set forth.

8 In a conduit for high tension electric currents, the combination of apipe or tube comprising a plurality of sections, a conductor in each ofsaid sections, a coupling o nlng two of the sectlo-ns, the said couplingbeing .formed of two sections, secured respectivelyon the adjacent endsof the pipe sections and secured together, and two insulat-ing blockswithin said coupling, spaced from each other and from the tube sections,

' each of said conductors being secured to one of said insulatingblocks, and a flexible con necticn joining the ends of the conductorssecured to said blocks, substantially asset forth.

9. In a conduit for high tension electric currents, the combination of asupporting tube, a conductor therein, an insulating block secured tosaid conductor, 'and yielding means positioned to impose stress on saidblock to maintain said conductor under tension, substantially as setforth.

This specification signed and witnessedthis 17th day of April 1905.

WILLIAM A. WARREN.

Witnesses:

FRANK L: DYER, MINA C. MAGABTIIUR.

